11445505 has 24 divisors (see below), whose sum is σ = 15389352. Its totient is φ = 8142336.

The previous prime is 11445481. The next prime is 11445521. The reversal of 11445505 is 50554411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2547216 + 8898289 = 1596^2 + 2983^2 .

It is not a de Polignac number, because 11445505 - 2⁷ = 11445377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11445505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30499 + ... + 30871.

It is an arithmetic number, because the mean of its divisors is an integer number (641223).

Almost surely, 2^11445505 is an apocalyptic number.

It is an amenable number.

11445505 is a deficient number, since it is larger than the sum of its proper divisors (3943847).

11445505 is a wasteful number, since it uses less digits than its factorization.

11445505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 11445505 is about 3383.1206008654. The cubic root of 11445505 is about 225.3607710152.

Adding to 11445505 its reverse (50554411), we get a palindrome (61999916).

The spelling of 11445505 in words is "eleven million, four hundred forty-five thousand, five hundred five".